Organic compounds -- part of the class 532-570 series – Organic compounds – Oxygen containing
Patent
1990-01-02
1990-10-09
Mars, Howard T.
Organic compounds -- part of the class 532-570 series
Organic compounds
Oxygen containing
536120, 560200, 564475, 564505, 568620, 568606, 568607, 568616, 568617, 568619, 568 45, 568 46, C07C 4103
Patent
active
049622374
ABSTRACT:
A catalytic process for polymerizing epoxides using active hydrogen initiators forming polyols having low unsaturation levels and high primary hydroxyl levels. The catalysts useful in this process are prepared from catalyst precursors exemplified by hydrotalcite. This process is more reactive with less acidic active hydrogen initiators. The polyols can be used in urethanes without removal of the catalyst.
REFERENCES:
patent: 3117998 (1964-01-01), Cosby
patent: 3539648 (1970-11-01), Orkin
patent: 3941849 (1976-03-01), Herold
patent: 4265783 (1981-11-01), Hinze
patent: 4282387 (1981-09-01), Olstowski et al.
patent: 4299993 (1981-06-01), Bethea et al.
patent: 4564671 (1986-01-01), Mueller
G. W. Brindley et al., American Mineralogist, 64, 836-842 (1979).
Shigeo Miyata, Clay and Clay-Minerals, 23, 369-375 (1975).
Makromol. Chem., Rapid Commun., Polymerization of Propylene Oxide by Calcined Synthetic Hydrotalcite, S. Kohjiya, Toshihiko Sato, T. Nakayama, S. Yamashita, 231-233, (1981).
Bull. Chem. Soc. Jpn., The Polymerization of .beta.-Propiolactone by Calcined Synthetic Hydrotalcite, T. Nakatsuka et al., 52, 2449-2450 (1979).
Journal of Catalysis, Walter T. Reichle, Catalytic Reactions by Thermally Activated, Synthetic, Anionic Clay Minerals, 94, 547-557, (1985).
J. Furukawa, T. Saegusa, "Polymerization of Aldehydes and Oxides," Interscience, New York, N.Y., 1963, Chapter 3.
Mars Howard T.
Ruhr Paula Sanders
The Dow Chemical Company
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